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  • Title: Expression of Interleukin-35 and Type 2 Cytokines in Children with Acute Allergic Asthma.
    Author: Cai Z, He Y, Yang J.
    Journal: Iran J Immunol; 2021 Sep; 18(3):195-202. PubMed ID: 34596584.
    Abstract:
    BACKGROUND: Allergic asthma is believed to be a T helper 2 cell (Th2) preponderant response caused by airway hyper-responsiveness. Interleukin-35 (IL-35) is a newly discovered anti-inflammatory cytokine. OBJECTIVE: To determine whether the expression of IL-35 is associated with type-2 inflammation in children with asthma exacerbations. METHODS: Thirty children (6-12 years old) with acute allergic asthma and twenty healthy controls were enrolled. Sputum was collected from lower airways. IL-35 and type 2 cytokines expression from serum and sputum were measured at mRNA and protein level by real-time PCR and enzyme-linked immunosorbent assay (ELISA), respectively. The sampling and the test were repeated eight weeks after the asthma exacerbation. RESULTS: At the time of exacerbation, IL-35 expression decreased significantly in induced sputum and serum than in the controls. The expression of IL-35 was negatively correlated with IL-4, IL-5 and IL-13 expression. The IL-35 from induced sputum increased significantly, whereas type-2 cytokines decreased significantly eight weeks after the exacerbation. CONCLUSION: Our results showed that decreased IL-35 was associated with type-2 cytokines in asthma exacerbations in children, suggesting that IL-35 may be a potential future drug target for asthma exacerbations.
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